Check the model and line size
Find the model code on the tool and use its manual. The DEWALT DCST922 manual specifies 0.080-inch (2.0 mm) line; do not assume that size applies to every DEWALT battery trimmer.
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Guide
How to Restring a DEWALT Battery-Operated Weed Eater
For the DEWALT DCST922, the manual specifies 0.080-inch line. Remove the battery before opening the head and follow the instructions for your exact model.
Remove the battery and prepare the head
Switch the trimmer off, remove the battery and wait for the head to stop. Clean grass and dirt from the spool area, then open the head as shown in the model manual.
Wind the replacement line
Cut the manual-specified length and feed it through the spool’s anchor point. Wind in the direction marked on the spool, keeping the turns neat and within the edge guides. Leave the specified tail length for threading.
Reload and close the spool
Thread the line ends through the head eyelets, seat the spool in its housing and secure the cap. Check that the line moves freely and that the cover is fully locked before reinstalling the battery.
Test the feed safely
Put on eye protection, keep people clear and start the trimmer in an open area. Use the feed method described in the manual; stop and remove the battery before clearing a jam.
Clean and inspect after trimming
Remove the battery before brushing debris from the guard and head. Inspect the spool, cap and line for wear, and replace parts only with components listed for that model.
Common questions
Questions before you buy
How to restring a DEWALT battery powered weed eater?
Use the exact model manual, remove the battery, wind the specified line in the marked direction and reseat the spool and cap securely. The DCST922 manual calls for 0.080-inch line.
How do I put string on a DEWALT battery weed eater?
Open the spool housing according to the manual, anchor and wind line evenly, then feed the ends through the eyelets before closing the housing. Exact steps vary by model.
What size string does a DEWALT battery weed eater use?
The DCST922 manual specifies 0.080-inch (2.0 mm) line. Check the manual for your own trimmer because line requirements can differ.
How do I restring a battery-operated STIHL weed eater?
STIHL head designs differ by model. Use the instructions for the exact trimmer and mowing head, remove the battery first and use only approved line.
How do I restring a CRAFTSMAN battery-operated weed eater?
Check the model number and follow its manual for spool type and winding direction. Do not transfer DEWALT line or spool guidance to a different brand.
How do I restring a RYOBI battery-operated weed eater?
Identify the RYOBI model and head type first, then follow its manual for replacement spool or line loading. Disconnect the battery before servicing.
Sources and how we chose
- DEWALT DCST922 product page · 2026-10-23
- DEWALT DCST922 instruction manual · 2026-10-23
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